When I did the cast/set list research for 1998 earlier this year, I re-adjusted the character listings for Kristen/Susan/Penelope, since we didn't know at the time of the episodes airing that this was a character named Penelope yet, or that Kristen was masquerading as Susan.

So, here are the corrected cast/set lists for the 2 episodes where "Kristen" is floating in the pool: